Magnesium flash-lamp.



0. B. HENRIOKSONf MAGNESIUM FLASE LAMP. APPLICATION IILED MAY 1, 1912.

Patented Dec. 23, 1913.

INVENTOR WITNESSES Y B Y ATTORNEY .the' container.

o'rro. B.= nanmc 'sou, or SHELBY, MICHIGAN:

magnesium FL SH-LAMP.

Specification oi hatter Patent. Pt t tgl tut Dec. 23, 1913 Application filed Kay 1, 1912. Serial No. 694,339.

To allwhom it may concern: I t

Be it known that I, O'rro B. HnNmoKsoN,

a citizen of the United States, rIesidin at Shelby, in the county of Oceana and .tate of Michigan, have invented new and useful Improvements in Magnesium Flash-Lamps, of which the following is a Specification. f

This invention relates to improyements in magnesium lamps, for takin photographic ictures by artificial light. n such a para us, magnesium powder is blown, y the breath of the operator, throu h a narrow opening and in front of an alcoflol flame and is there ignited. 'Prior forms of such apparatus have been open to the objection that when the magnesium powder. became damp from the moisture contalned 1n the breathof the operator, the slit or o ening through which the powder was expellied was of :such a character that the damp powder clogged it up so that the powder could not pass the opening. I

The object of my invention is to provide hat such clogging cannot occur. I fj In the accompanying drawing, Figure 1 is a front view of the apparatus; Fig. 2 is ajside view thereof; Fig. 3 is a vertical sectional view thereof.

Referring to the drawing 1 indicates a! z cylindrical box or container, the lower open end of which is closed by aremovable cap- 2. Through the cylindrical wall Ofsaid container ad acent'tO said lower end passes a tube 3, around the outer end of which is passed one end of arubber tube 4, the other end of which the operator inserts in. his mouth and thus forces a blast of air into Irg said container is magnesium powder, which, when said blast 1s produce is forced into the open end of a tube 6, extending vertically wlthin the container and out through the u per closed end thereof. The upper termina portion of the tube 6, outside said container, is so bent, as shown at 7, that the magnesium owder, emerging therefrom, impinges against the upper concave surface of a deflector plate 8, which flares or increases in width upwardly, and is secured, as shown at 9, upon the closed upper end of the container, and pases' obliquelyupward through aslot 11 ot'med in a vertical reflector plate or shield 12, the lower end of which is secured, as shown at 13, to the closed end of. the container. Said shield also widens considerignited by the flames of the alcohol.

ably from its lower portion connectedwith the container to the upper edge th f. e free end of the deflector plate supports a receptacle 14 for a wick 16, for burning alcohol, which alcohol is ignited before the operation 0t taking a picture by means or said magnesium lamp.

The upper surface of the deflector plate is sufliciently spaced from the reflector where is passes through the slot to permit the passage, between said upper surface and reflector, of thepowder and any moist masses thereof which -mi ht not he-com letely flat,- tened by the detflector plate. uch masses might be formed when the lamp containing damp powder is unused for a'iconsiderable time, and the uppertermina'l portion of the deflector plate is substantially parallel with" the reflector, and spaced therefromlnot much more than the distance of the reflector plate from the upper edge of the slot. Consequently, the powder, on being forced by the blast of air through. the slot and upwardly past the edge. of the deflector plate near which the alcohol is burning, is immediately With the above a paratus there can be no possible clogging o the powder which would prevent the successful operation of. thhi'levice, even though the powder be damp owin to the moisture in the operators breath. %or

on g ccount of the cylindrical container beingcompletely inclosed and the terminal por tion of the tube 6 being in no way obstructed,

the force of the o erators, breath is always suflicient to pro uce a blast of powder through said tube 6, and this powder, on emerging from said tube, and impinging upon the concave uppersurface of the deflector plate, is thereby spread into a thi sheet and therefore cannot clog up the opening between said deflector plate and the upper edge of the slot in the reflector. A ain with rior magnesium lamps, it.has en possib for'the magnesium to become ig' nited within the container upon the cessation of the blast of air, when there is a tendeney for the operator to draw in his breath With the present apparatus this result is not possible, as the flame of the alcohol wickis sufficiently remote from the open end of the tube 6 to reventthe flame being drawn thereinto, and tube by the reflector or shield which has Onlya narrow slot therethrough. Another advantage of a deflector of this construction is also separated from said.

- is that the blast is kept concentrated by '15 face and a reflector disposed on the concave side of the deflector, the powder being dellvered on to one side, and the i iting means being on the other side, ofsai reflector.

2. A flash lamp comprising a container for flash owder and means for delivering a stream 0 powder therefrom, means for pro.

ducing a ame to ignite the powder, a deflector for spreading the powder and a reflector or shield disposed between the terminal portion of the deflecting surface and the orifice of the powder-delivering means, the

powder orifice being on one side, and'ttli'eflame beingon the other side, of the reflector or shield.

3. A magnesium lamp comprising a container for magnesium powder, an air conduit leading into said container, a powder conduit conducting from said container, a slotted plate, a receptacle for absorbent material 3 and a deflector plate extending through said slotted plate and terminating closely adjacent to said receptacle. g

r 4. A'magnesium lamp comprising a container for magnesium p0Wder,-an air con- 0 duit leading into said container, a powder [canal (iorrection in LettersPat'entNo,

Signed and sealed this I'Tth'day of March, A. D., 1914 conduitconducting from said container, a slotted plate, a receptacle for absorbent material and a concave deflector plate extending through said slotted plate and ter- .minating closely adjacent to said receptacle.

5. A magnesium lamp comprising a receptacle for magnesium powder, an air conduit leading into said receptacle, a powder conduit conducting from said receptacle, a reflector secured to the receptacle, and having a slot therein, a concave deflector'plate passing through said slot anda receptacle for an alcohol wick carried by the deflector-plate, the deflector plate being so arranged that the powder is discharged from the pewder con- 5 duit ,u on the deflector plate at one side of the re ector-thewick being on the other side of. said reflector.

6. A. magnesium lamp comprising a rec'eptaole for magnesium powder, an air conduit :12 leading into said receptacle, a powder conduit conducting from said receptacle, a flaring reflector secured to the receptacle and having a slot therein, a flaring deflector plate passing throu h said slot, the-terminal portion of the de ector plate being substantially parallel with the reflector, and a receptacle for an alcohol wick carried by the deflector plate, the deflector plate being so arranged that 'the powder from the powder conduit is discharged upon the deflector plate at one side. of the reflector, the wickvbeing on the other side ofsaid reflector.

In testimonywhereof I have hereunto set my hand in the presence of two subscribing 7 5 witnesses. i

OTTO B. HENRIOKSON.

Witnesses:

FRANCIS M. WRIGHT, N. B.KEATI3IG.

It is hereby certified that in Letters Patent No. 1,082,326, granted Decemhe r fl, 1913, upon the application of Otto B. Henrickson, of Shelby, Michigan, for an" improvement Magnesium Flash-Lampml error appears in the printed spect fication requiring correction as follows: Page line 17 ,strike out the word t e, and that the said Letters Patent sho'uldbe r adwith thiscorrection therein that? the same may conform to the records of the case in the Patent Oflice.

J. 'r. NEWTON,

Actdng Commissioner cfPatmfls,

- is that the blast is kept concentrated by '15 face and a reflector disposed on the concave side of the deflector, the powder being dellvered on to one side, and the i iting means being on the other side, ofsai reflector.

2. A flash lamp comprising a container for flash owder and means for delivering a stream 0 powder therefrom, means for pro.

ducing a ame to ignite the powder, a deflector for spreading the powder and a reflector or shield disposed between the terminal portion of the deflecting surface and the orifice of the powder-delivering means, the

powder orifice being on one side, and'ttli'eflame beingon the other side, of the reflector or shield.

3. A magnesium lamp comprising a container for magnesium powder, an air conduit leading into said container, a powder conduit conducting from said container, a slotted plate, a receptacle for absorbent material 3 and a deflector plate extending through said slotted plate and terminating closely adjacent to said receptacle. g

r 4. A'magnesium lamp comprising a container for magnesium p0Wder,-an air con- 0 duit leading into said container, a powder [canal (iorrection in LettersPat'entNo,

Signed and sealed this I'Tth'day of March, A. D., 1914 conduitconducting from said container, a slotted plate, a receptacle for absorbent material and a concave deflector plate extending through said slotted plate and ter- .minating closely adjacent to said receptacle.

5. A magnesium lamp comprising a receptacle for magnesium powder, an air conduit leading into said receptacle, a powder conduit conducting from said receptacle, a reflector secured to the receptacle, and having a slot therein, a concave deflector'plate passing through said slot anda receptacle for an alcohol wick carried by the deflector-plate, the deflector plate being so arranged that the powder is discharged from the pewder con- 5 duit ,u on the deflector plate at one side of the re ector-thewick being on the other side of. said reflector.

6. A. magnesium lamp comprising a rec'eptaole for magnesium powder, an air conduit :12 leading into said receptacle, a powder conduit conducting from said receptacle, a flaring reflector secured to the receptacle and having a slot therein, a flaring deflector plate passing throu h said slot, the-terminal portion of the de ector plate being substantially parallel with the reflector, and a receptacle for an alcohol wick carried by the deflector plate, the deflector plate being so arranged that 'the powder from the powder conduit is discharged upon the deflector plate at one side. of the reflector, the wickvbeing on the other side ofsaid reflector.

In testimonywhereof I have hereunto set my hand in the presence of two subscribing 7 5 witnesses. i

OTTO B. HENRIOKSON.

Witnesses:

FRANCIS M. WRIGHT, N. B.KEATI3IG.

It is hereby certified that in Letters Patent No. 1,082,326, granted Decemhe r fl, 1913, upon the application of Otto B. Henrickson, of Shelby, Michigan, for an" improvement Magnesium Flash-Lampml error appears in the printed spect fication requiring correction as follows: Page line 17 ,strike out the word t e, and that the said Letters Patent sho'uldbe r adwith thiscorrection therein that? the same may conform to the records of the case in the Patent Oflice.

J. 'r. NEWTON,

Actdng Commissioner cfPatmfls, 

